You'll be able to pick them up in 50", 58", or 71" sizes.
When HD TVs came out, the way television was filmed and watched changed significantly - we went from 4:3 to 16:9, giving us a nice wide frame. It's a nice step up and it helps out with watching movies, but it's not as nice as it could be - black bars are black bars.
Vizio's new line of Cinema Wide TVs set out to please hardcore movie fans. In 50", 58" and 71" sizes, the Cinema Wide TVs give you a long enough screen that you'll get a full frame without those black bars. The 21:9 sets aren't just 1080p TVs stretched out, of course. They sport a resolution of 2560 x 1080.
The 50" and 58" sets offer Razor LED edge-lighting with smart dimming and a 120Hz refresh rate. The 71" TV steps things up significantly by including Full Array Tru LED backlighting with 120 zones across the TV. It also gives you a 240Hz refresh rate.
You'll also find things that have become standard for higher end TVs, like a controller with a QWERTY keyboard, built-in Wi-Fi and, because it's a Vizio, passive 3D capabilities.
No prices or release dates have been revealed yet, but we should be seeing these sometime in 2012.